| 1. Non-marring bumper 2.Sensor avoids stairs or being stuck under furniture3.Touch-sensitive bumper senses obstacles as it vacuums a room4.Automatically adjust to different floor surfaces 5.Maintains same constant cleaning power6.80-minute rechargeable Ni-Cd battery7.Picks up fine debris and pet hair 8.Cleans wood, slate, tile and low to medium pile carpet9.ravels through several cleaning patterns to ensure the entire room is clean10..Three timer settings runs from 10to 80 minutes, allows users to select how long they want to clean11.Uses infrared for sweeper prevents Auto Sweeper from falling down stairs 12.Designed with light sensor Auto Sweeper, cleans even under sofa or bed 13.Designed with nonstick hair brushes 14..Cleaning route includes 5 different patterns, Special bounce, Spiral, Along the wall , Polygonal spiral and S shape15.with Auto Rechargeable device:when the Vacuum Cleaner battery power is not enough, The Vacuum Cleaner will auto look for the Auto Rechargeable device and Auto Rechargeable battery then auto working | 
